.product-info {
  margin-bottom: 24px;
  .product-info__left {
    margin-top: 24px;
    width: 74.49%;
    @media (max-width: 992px) {
      width: 100%;
    }
    .info-left__nav {
      position: relative;
      padding: 16px 0;
      margin-bottom: 0;
      width: 100%;
      height: 52px;
      text-align: center;
      list-style: none;
      background-color: #fff;
      border-bottom: 1px solid #ebebeb;
      li {
        display: inline-block;
        margin: 0 80px;
        @media (max-width: 992px) {
          margin: 0 20px;
        }
        a {
          position: relative;
          color: #666;
          .es-transition();
        }
        &.active a {
          font-size: 16px;
          color: #46C37B;
          &:after {
            position: absolute;
            bottom: -16px;
            left: 0;
            content: '';
            width: 100%;
            height: 3px;
            background-color: #46C37B;
            .border-radius(2px);
          }
        }
      }
    }
    .fixed {
      position: fixed;
      left: 0;
      top: 0;
      width: 100%;
      height: 80px;
      line-height: 80px;
      background-color: #fff;
      z-index: 9999;
      .box-shadow(0px 2px 20px 0px rgba(0, 0, 0, 0.05));
      .info-left__nav {
        width: 74.49%;
        padding: 0;
        border-bottom: none;
        li > a:after {
          bottom: -32px;
        }
        @media (max-width: 992px) {
          width: 100%;
        }
      }
      .buy__btn {
        width: 23.47%;
        padding: 0 24px;
        text-align: right;
        a {
          margin-top: 24px;
          padding: 6px 24px;
          background-color: #FF7E56;
          line-height: 20px;
          color: #fff;
          .border-radius(4px);
          cursor: pointer;
        }
        @media (max-width: 992px) {
         display: none;
        }
      }
    }
    .fixed-box {
      height: 80px;
    }
    .info-left__content {
      .content-item {
        padding: 32px 16px 16px;
        margin-top: 24px;
        background-color: #fff;
        &:first-child {
          margin-top: 0;
        };
        .content-item__title {
          position: relative;
          margin: 0;
          padding-left: 14px;
          font-size: 18px;
          font-weight: 500;
          line-height: 24px;
          color: #333;
        }
      }
    }
  }
  .product-info__right {
    width: 23.47%;
    @media (max-width: 992px) {
      width: 100%;
    }
    .info-right-box {
      padding: 8px 16px 16px;
      background-color: #fff;
      .title {
        font-size: 16px;
        color: #333;
        line-height: 24px;
        padding-bottom: 8px;
        border-bottom: 1px solid #ebebeb;
      }
    }
    // 授课老师
    .info-right-teacher {
      margin-top: 24px;
      .teacher-info {
        margin-top: 16px;
        .teacher-info__img {
          width: 64px;
          height: 64px;
          .border-radius(50%);
        }
        .teacher-info__introduce {
          padding-top: 6px;
          margin-left: 12px;
          width: calc(100% - 76px);
          .introduce__name {
            color: #333;
            line-height: 20px;
          }
          .introduce__text {
            margin-top: 12px;
            .text-overflow;
            font-size: 12px;
            color: #999;
            line-height: 16px;
          }
        }
      }
    }
    // 公众号
    .info-right-qr {
      margin-top: 24px;
      .qr-info {
        margin-top: 16px;
        text-align: center;
        .qr-info__img {
          width: 160px;
          height: 160px;
           margin: auto;
          img {
            width: 100%;
            height: 100%;
          }
        }
        .qr-info__introduce {
          margin-top: 16px;
          color: #666;
          p {
            line-height: 20px;
            &:last-child {
              margin-bottom: 0;
            }
          }
        }
      }
    }
    // 猜你想学
    .info-right-learn {
      margin-top: 24px;
      .learn-info-item {
        margin-top: 24px;
        cursor: pointer;
        .learn-img {
          position: relative;
          width: 46.721%;
          padding-bottom: 26.229%;
          img {
            position: absolute;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
          }
        }
        .learn-text {
          width: 49.18%;
          p {
            margin: 0;
          }
          .learn-text__title {
            margin: 4px 0;
            font-size: 12px;
            color: #333;
            height: 32px;
            line-height: 16px;
            display: -webkit-box;
            overflow: hidden;
            -webkit-box-orient: vertical;
            text-overflow: ellipsis;
            -webkit-line-clamp: 2;
          }
          .learn-text__price {
            font-size: 16px;
            font-weight: 500;
            line-height: 24px;
            color: #FF5C3B;
            &::before {
              content: '¥';
              font-size: 12px;
            }
          }
          .detail-right__price__unit {
            color: #666;
            font-size: 12px;
            font-weight: normal;
          }
        }
      }
      .learn-more {
        margin-top: 24px;
        text-align: center;
        color: #46C37B;
        line-height: 20px;
      }
    }
    // 认证证书
    .info-right-certificate {
      margin-top: 24px;
      .certificate-info {
        margin-top: 24px;
        padding: 0 8px;
        text-align: center;
        .certificate-info__img {
          width: 228px;
          height: 128px;
          @media (max-width: 1200px) {
            width: 180px;
            height: 100px;
          }
        }
        .certificate-info__title {
          margin: 12px auto 0;
          width: 228px;
          font-size: 14px;
          color: #333333;
          line-height: 20px;
          @media (max-width: 1200px) {
            width: 180px;
          }
        }
      }
    }
  }
  .all-width {
    width: 100%;
  }
}

// 评价


// 学习课程列表
.classroom-task {
  .classroom-task__item {
    position: relative;
    margin-top: 16px;
    padding: 16px;
    // height: 122px;
    box-shadow: 0px 2px 12px 0px rgba(0, 0, 0, 0.05);
    cursor: pointer;
    .border-radius(4px);
    @media (max-width: 750px) {
      padding: 10px;
    }
    .task-banner {
      position: absolute;
      left: 16px;
      top: 16px;
      width: 160px;
      height: 90px;
      @media (max-width: 750px) {
        width: 126px;
        height: 71px;
      }
      img {
        width: 100%;
        height: 100%;
      }
    }

    .task-content {
      margin-left: 176px;
      @media (max-width: 750px) {
        margin-left: 140px;
      }
      .task-content__title {
        font-size: 16px;
        font-weight: 500;
        color: #333;
      }
      .task-content__plan {
        position: relative;
        padding-right: 70px;
        font-size: 14px;
        color: #999;
        > span {
          position: absolute;
          right: 0;
        }
      }
      .task-content__teacher {
        .teacher-info {
          img {
            width: 24px;
            height: 24px;
            .border-radius(50%);
          }
          span {
            font-size: 14px;
            color: #999;
            vertical-align: middle;
          }
          @media (max-width: 750px) {
            img {
              display: none;
            }
          }
        }
        .price-info {
          font-size: 18px;
          color: #FF5C3B;
          &::before {
            content: '￥';
            font-size: 14px;

          }
        }
        .coin-info {
          font-size: 18px;
          color: #FF5C3B;
        }
      }
    }
  }
  .learn-more {
    margin-top: 24px;
    text-align: center;
  }
}

.back-to-top-pc {
  position: fixed;
  bottom: 70px;
  right: 20px;
  display: none;
  width: 36px;
  height: 30px;
  background-color: #fff;
  text-align: center;
  cursor: pointer;
  i {
    font-size: 20px !important;
    color: #46C37B;
  }
  &::before {
    position: absolute;
    top: -18px;
    left: 0;
    display: inline-block;
    content: '';
    border-bottom: 18px solid #fff;
    border-left: 18px solid transparent;
    border-right: 18px solid transparent;
  }
  @media (max-width: 767px) {
    display: block;
   }
}

// 创建评价
.create-review {
  margin-top: 20px;
  .create-review__grade {
    margin-bottom: 12px;
    span > img {
      cursor: pointer;
    }
  }
  .create-review__content {
    width: 100%;
    height: 160px;
    border: 1px solid rgba(225, 225, 225, 1);
    outline-color: #46c37b;
    outline-width: 1px;
    .border-radius(4px);
  }
  .create-review__btn {
    text-align: right;
    span {
      display: inline-block;
      padding: 6px 16px;
      .border-radius(4px);
      text-align: center;
      cursor: pointer;
      .es-transition;
      line-height: 20px;
    }
    .btn-cancel {
      background-color: #ebebeb;
      color: #999;
      &:hover {
        background: rgba(206, 209, 207, 0.7);
      }
    }
    .btn-confirm {
      background: rgba(70, 195, 123, 1);
      color: #fff;
      &:hover {
        background: rgba(70, 195, 123, .7);
      }
    }
  }
}

.description-content img {
  max-width: 100%;
  height: auto;
}